It makes the bike more stable at high speed, stops wobbling, the bike will ROLL over obstacles easier, and it will also have more ground clearance. This is probably the best performance upgrade for the money.

bolt to bolt: sprocket side: 65mm

(Optional rear sprocket: 420 chain 43 tooth)

bolt to bolt: rotor side: 72mm

This rim should fit most Chinese made pit bikes with DISC brake assembly.Please check pictures for dimensions before purchase, if you are not sure you can purchase the matching disc rotor & rear sprocket (bolts not included) from us. (See pictures below for detail)